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J4 ›› 2009, Vol. 17 ›› Issue (1): 53-55.

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Determination of Trace Gold in Geochemical Sample by Z-2000 GFAAS

LIU Tao1,LI Nianzhan2,LI Junqiang1,LIU Jiufen1,XIE Lu1   

  1. 1.No.7 Gold Geological Party of CAPF, Yantai   264004,Shandong,China;
    2.The Gold Design Institute of Yantai, Yantai   264004,Shandong,China
  • Received:2008-08-21 Revised:2008-10-11 Online:2009-02-28 Published:2014-01-26

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Abstract:

Trace gold is concentrated with foam plastics, by extrication of sulfur thiourea solution, using the technology of slope-heating and pyrolytic coated graphite tube formeasure trace gold by Z-2000 graphite furnace atomic absorption spectrometry(GFAAS),we discuss the influences of standard curve and working curve on the determination result.By standard recovery experiment,variousmethods compare and determination of the first class national standard materials,the detection limit of the method is 0.1×10-9,the recovery rate is 96%～110% and the p recision is 3%～11%,which satisfy analysis requirements of trace gold in 1∶50 000 geochemical sample.

Key words: Z-2000 graphite furnace, Atomic absorption spectrometry, Trace gold, Foam plastics, Geochemical samples

CLC Number: 

  • O657.31


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